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From "Carter Shanklin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-16944) schematool -dbType hive should give some more feedback/assistance
Date Thu, 22 Jun 2017 14:57:00 GMT
Carter Shanklin created HIVE-16944:
--------------------------------------

             Summary: schematool -dbType hive should give some more feedback/assistance
                 Key: HIVE-16944
                 URL: https://issues.apache.org/jira/browse/HIVE-16944
             Project: Hive
          Issue Type: Bug
            Reporter: Carter Shanklin


Given the other ways schematool is used, the most obvious guess I would have for initializing
the Hive schema is:

{code}
schematool -metaDbType mysql -dbType hive -initSchema
{code}

Unfortunately that fails with this NPE:
{code}
Exception in thread "main" java.lang.NullPointerException
	at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper.getDbCommandParser(HiveSchemaHelper.java:570)
	at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper.getDbCommandParser(HiveSchemaHelper.java:564)
	at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper.getDbCommandParser(HiveSchemaHelper.java:560)
	at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper$HiveCommandParser.<init>(HiveSchemaHelper.java:373)
	at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper.getDbCommandParser(HiveSchemaHelper.java:573)
	at org.apache.hive.beeline.HiveSchemaTool.getDbCommandParser(HiveSchemaTool.java:165)
	at org.apache.hive.beeline.HiveSchemaTool.<init>(HiveSchemaTool.java:101)
	at org.apache.hive.beeline.HiveSchemaTool.<init>(HiveSchemaTool.java:90)
	at org.apache.hive.beeline.HiveSchemaTool.main(HiveSchemaTool.java:1166)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.apache.hadoop.util.RunJar.run(RunJar.java:233)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
{code}

Two additional arguments are needed:
-url jdbc:hive2://localhost:10000/default -driver org.apache.hive.jdbc.HiveDriver

If the user does not supply these for dbType hive, schematool should detect and error out
appropriately, plus give an example of what it's looking for.



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